This appears to be a spammer.
Administrators may want to check the user's contributions to see if there's justification to the claim, the before waving the banhammer. Or, maybe just pause to do a better hack-code on the underlying Template:Spammer, y'know.
Non-admin users can use this template for User/UserTalk pages that you feel are associated with a spammer account and thus should be banhammered by an administrator. See Category:Spammer for a list of such alleged spammers.